SCIENCE-BASED CARE

The Science Behind UVB Phototherapy

Explore how 308nm excimer light and 311nm narrowband UVB interact with skin, influence local immune responses, and support repigmentation in vitiligo.

How UVBwell Phototherapy Works

Using vitiligo as an example, see how targeted UVB light helps the skin recover.

01 / LIGHT DELIVERY

Delivering the Light. Directly to the White Patch.

Precision 308nm excimer light targets the affected patch directly, penetrating the epidermis to initiate healing right where it is needed.

Targeted delivery concentrates energy on the lesion while sparing healthy skin.

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Delivering the Light. Directly to the White Patch.

02 / IMMUNE RESPONSE

Reducing the Immune Attack. Giving Pigment Cells a Chance.

The targeted light calms local immune activity by clearing overactive T-cells, protecting remaining melanocytes so pigment cells can recover.

Calming the immune response shields vulnerable pigment cells.

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Reducing the Immune Attack. Giving Pigment Cells a Chance.

03 / REPIGMENTATION

Activating Pigment Cells. Helping Color Spread Back.

Stimulated melanocytes migrate into the patch and resume melanin production, gradually restoring natural skin color over the course of sessions.

Color returns naturally from your skin's own activated pigment cells.

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Activating Pigment Cells. Helping Color Spread Back.

Different Conditions. Different Responses.

Discover how UVB phototherapy acts on pigment loss, inflammation, and excess skin cell growth.

Support pigment recovery.

UVB helps calm the immune response against pigment-producing cells and encourages remaining melanocytes to restore pigment.

View Supporting Research ↗

Treatment goals are general and do not guarantee results. Device suitability and treatment plans vary by condition and individual. Follow clinical guidance and the device's intended use.

Real Skin. Real Change.

Explore treatment journeys and changes over time.

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Questions? We’ve Got Answers.

Find quick answers about UVBWell, phototherapy solutions, professional support, and where to learn more.

UVB phototherapy works by delivering a controlled wavelength of ultraviolet light to affected skin. This light helps slow abnormal skin cell activity, calm local inflammation, and support healthier skin recovery. In vitiligo, it may help stimulate melanocytes and encourage repigmentation. In psoriasis and eczema, it is commonly used to reduce inflammation, scaling, and itching over time.

Both are commonly used in phototherapy, but they are not the same. 308nm excimer light is typically used for more targeted treatment, making it a good option for localized areas. It delivers concentrated energy to specific lesions or patches. 311nm narrowband UVB is more commonly used for broader treatment areas and is widely recognized for its balance of efficacy and tolerability. The right choice depends on the condition being treated, the size of the affected area, and the treatment goal.

Not necessarily. Higher intensity can deliver a given UVB dose in less time, but it doesn't guarantee faster improvement. The right dose matters more than intensity alone, and excessive exposure can damage the skin.

Many UVB phototherapy routines are performed 2 to 3 times per week, although some home-use plans may vary depending on the device, condition, and skin response. Results are usually gradual rather than immediate. Some users may begin to notice early visible changes after several weeks of consistent use, while more noticeable improvement often takes longer. Response time can vary based on the condition, treatment area, and individual skin characteristics.

Home UVB phototherapy can be safe when the device is used as directed and treatment is approached carefully. The key is controlled exposure, consistent scheduling, and avoiding overuse. Many users choose home treatment for convenience and long-term consistency, but it is still important to follow product instructions and seek professional guidance when needed, especially if symptoms change or irritation develops.